You need to use the slop formula (y2-y1/x2-x1)
9 -3/5--3
6/5+3
6/8
3/4
The slope is 3/4
Answer: um 5 4/9
Step-by-step explanation:
Hello,
f(x,y)=4cos x sin y-2
@f/@x=-4sin x sin y
@f/@y=4 cos x cos y
dy/dx=-(@f/@x)/(@f/@y)=sin x sin y/(cos x cos y)=tg x * tg y
